3LS1 | pdb_00003ls1

Crystal Structure of Cyanobacterial PsbQ from Synechocystis sp. PCC 6803 complexed with Zn2+

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	RVP	e3ls1B1	A: a/b three-layered sandwiches	X: cradle loop barrel	H: RIFT-related	T: acid protease	F: RVP	ECOD (v294.1)
A	RVP	e3ls1A1	A: a/b three-layered sandwiches	X: cradle loop barrel	H: RIFT-related	T: acid protease	F: RVP	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	1.20.120.290	Mainly Alpha	Up-down Bundle	Four Helix Bundle (Hemerythrin (Met), subunit A)	Oxygen-evolving enhancer protein 3 (PsbQ), four-helix up-down bundle	CATH (4.3.0)
A	1.20.120.290	Mainly Alpha	Up-down Bundle	Four Helix Bundle (Hemerythrin (Met), subunit A)	Oxygen-evolving enhancer protein 3 (PsbQ), four-helix up-down bundle	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF05757	Oxygen evolving enhancer protein 3 (PsbQ)	Oxygen evolving enhancer protein 3	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Sll1638 protein	cation binding ion binding binding calcium ion binding metal ion binding small molecule binding	photosynthesis metabolic process cellular process	protein-containing complex intracellular anatomical structure photosystem plasma membrane protein complex photosystem II membrane plasma membrane membrane protein complex intracellular membraneless organelle cell periphery intracellular organelle cellular anatomical structure organelle membraneless organelle protein-containing complex intracellular anatomical structure photosystem plasma membrane protein complex photosystem II membrane plasma membrane membrane protein complex intracellular membraneless organelle cell periphery intracellular organelle cellular anatomical structure organelle membraneless organelle plasma membrane-derived thylakoid photosystem II bacterial thylakoid cytoplasm photosynthetic membrane thylakoid plasma membrane-derived chromatophore membrane plasma membrane-derived chromatophore thylakoid membrane plasma membrane-derived thylakoid membrane plasma membrane region extrinsic component of membrane catalytic complex photosystem II oxygen evolving complex oxidoreductase complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR017487	Photosystem II PsbQ, cyanobacteria	Family
A, B	IPR008797	Oxygen-evolving enhancer protein 3	Family
A, B	IPR023222	PsbQ-like domain superfamily	Homologous Superfamily

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.